Methylation
Methylation is a chemical process where a methyl group is attached or substituted on numerous substrates.
Methylation is catalyzed by enzymes, in DNA methylation by DNA methytransferases. An intermediate, termed Me-CpG is catalyzed by these enzymes.
Protein methylation is a post-translational modification. It occurs on arginine and/or lysine residues found within protein sequences. The enzymes involved in these processes include lysine methyltransferase converting the process on lysine residues and peptidylarginine methyltransferases on arginine. Histone methylation occurs through histone methyltransferases, which transfer a methyl group from S-adenosyl methionine.
DNA methylation is a process of modifying DNA to alter gene expression, as well as chromatin packaging. Read more from the links to the left and above to learn more about this fascinating modification to DNA, DNA Methylation.